The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 2018
Filed:
Mar. 13, 2014
Amtek Research International Llc, Lebanon, OR (US);
Richard W. Pekala, Corvallis, OR (US);
Chi Thuong-Le La, Happy Valley, OR (US);
Cory S. Rogers, Eugene, OR (US);
Jeffry M. Frenzel, Albany, OR (US);
Robert Waterhouse, Lebanon, OR (US);
David P. Walker, Wallsend, GB;
AMTEK RESEARCH INTERNATIONAL LLC, Lebanon, OR (US);
Abstract
A lead-acid battery separator with ultralow resistivity results from high porosity, controlled pore () size distribution, and an ionic surfactant () with a long alkyl side chain () that is anchored to the polymer matrix () of a silica-filled polyethylene separator. The surfactant cannot be easily removed or washed away and thereby imparts sustained wettability to the separator. Controlling the number of, and volume occupied by, the pores (i.e., porosity) and pore size distribution of the separator contributes to a reduction in electrical (ionic) resistivity.